"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.createFloorNumber = exports.createFloor = void 0;
var _decimal = _interopRequireDefault(require("decimal.js"));
var _factory = require("../../utils/factory.js");
var _collection = require("../../utils/collection.js");
var _number = require("../../utils/number.js");
var _nearlyEqual = require("../../utils/bignumber/nearlyEqual.js");
var _matAlgo11xS0s = require("../../type/matrix/utils/matAlgo11xS0s.js");
var _matAlgo12xSfs = require("../../type/matrix/utils/matAlgo12xSfs.js");
var _matAlgo14xDs = require("../../type/matrix/utils/matAlgo14xDs.js");
const name = 'floor';
const dependencies = ['typed', 'config', 'round', 'matrix', 'equalScalar', 'zeros', 'DenseMatrix'];
const bigTen = new _decimal.default(10);
const createFloorNumber = exports.createFloorNumber = /* #__PURE__ */(0, _factory.factory)(name, ['typed', 'config', 'round'], _ref => {
  let {
    typed,
    config,
    round
  } = _ref;
  function _floorNumber(x) {
    // First, if the floor and the round are identical we can be
    // quite comfortable that is the best answer:
    const f = Math.floor(x);
    const r = round(x);
    if (f === r) return f;
    // OK, they are different. If x is truly distinct from f but
    // appears indistinguishable from r, presume it really is just
    // the integer r with rounding/computation error, and return that
    if ((0, _number.nearlyEqual)(x, r, config.relTol, config.absTol) && !(0, _number.nearlyEqual)(x, f, config.relTol, config.absTol)) {
      return r;
    }
    // Otherwise (x distinct from both r and f, or indistinguishable from
    // both r and f) may as well just return f, as that's the best
    // candidate we can discern:
    return f;
  }
  return typed(name, {
    number: _floorNumber,
    'number, number': function (x, n) {
      if (!(0, _number.isInteger)(n)) {
        throw new RangeError('number of decimals in function floor must be an integer');
      }
      if (n < 0 || n > 15) {
        throw new RangeError('number of decimals in floor number must be in range 0 - 15');
      }
      const shift = 10 ** n;
      return _floorNumber(x * shift) / shift;
    }
  });
});
const createFloor = exports.createFloor = /* #__PURE__ */(0, _factory.factory)(name, dependencies, _ref2 => {
  let {
    typed,
    config,
    round,
    matrix,
    equalScalar,
    zeros,
    DenseMatrix
  } = _ref2;
  const matAlgo11xS0s = (0, _matAlgo11xS0s.createMatAlgo11xS0s)({
    typed,
    equalScalar
  });
  const matAlgo12xSfs = (0, _matAlgo12xSfs.createMatAlgo12xSfs)({
    typed,
    DenseMatrix
  });
  const matAlgo14xDs = (0, _matAlgo14xDs.createMatAlgo14xDs)({
    typed
  });
  const floorNumber = createFloorNumber({
    typed,
    config,
    round
  });
  function _bigFloor(x) {
    // see _floorNumber above for rationale
    const bne = (a, b) => (0, _nearlyEqual.nearlyEqual)(a, b, config.relTol, config.absTol);
    const f = x.floor();
    const r = round(x);
    if (f.eq(r)) return f;
    if (bne(x, r) && !bne(x, f)) return r;
    return f;
  }
  /**
   * Round a value towards minus infinity.
   * For matrices, the function is evaluated element wise.
   *
   * Syntax:
   *
   *    math.floor(x)
   *    math.floor(x, n)
   *    math.floor(unit, valuelessUnit)
   *    math.floor(unit, n, valuelessUnit)
   *
   * Examples:
   *
   *    math.floor(3.2)              // returns number 3
   *    math.floor(3.8)              // returns number 3
   *    math.floor(-4.2)             // returns number -5
   *    math.floor(-4.7)             // returns number -5
   *
   *    math.floor(3.212, 2)          // returns number 3.21
   *    math.floor(3.288, 2)          // returns number 3.28
   *    math.floor(-4.212, 2)         // returns number -4.22
   *    math.floor(-4.782, 2)         // returns number -4.79
   *
   *    const c = math.complex(3.24, -2.71)
   *    math.floor(c)                 // returns Complex 3 - 3i
   *    math.floor(c, 1)              // returns Complex 3.2 -2.8i
   *
   *    const unit = math.unit('3.241 cm')
   *    const cm = math.unit('cm')
   *    const mm = math.unit('mm')
   *    math.floor(unit, 1, cm)      // returns Unit 3.2 cm
   *    math.floor(unit, 1, mm)      // returns Unit 32.4 mm
   *
   *    math.floor([3.2, 3.8, -4.7])       // returns Array [3, 3, -5]
   *    math.floor([3.21, 3.82, -4.71], 1)  // returns Array [3.2, 3.8, -4.8]
   *
   *    math.floor(math.tau, [2, 3])  // returns Array [6.28, 6.283]
   *
   *    // Note that floor(array, array) currently not implemented.
   *
   * See also:
   *
   *    ceil, fix, round
   *
   * @param  {number | BigNumber | Fraction | Complex | Unit | Array | Matrix} x  Value to be rounded
   * @param  {number | BigNumber | Array} [n=0]                            Number of decimals
   * @param  {Unit} [valuelessUnit]                                        A valueless unit
   * @return {number | BigNumber | Fraction | Complex | Unit | Array | Matrix} Rounded value
   */
  return typed('floor', {
    number: floorNumber.signatures.number,
    'number,number': floorNumber.signatures['number,number'],
    Complex: function (x) {
      return x.floor();
    },
    'Complex, number': function (x, n) {
      return x.floor(n);
    },
    'Complex, BigNumber': function (x, n) {
      return x.floor(n.toNumber());
    },
    BigNumber: _bigFloor,
    'BigNumber, BigNumber': function (x, n) {
      const shift = bigTen.pow(n);
      return _bigFloor(x.mul(shift)).div(shift);
    },
    bigint: b => b,
    'bigint, number': (b, _dummy) => b,
    'bigint, BigNumber': (b, _dummy) => b,
    Fraction: function (x) {
      return x.floor();
    },
    'Fraction, number': function (x, n) {
      return x.floor(n);
    },
    'Fraction, BigNumber': function (x, n) {
      return x.floor(n.toNumber());
    },
    'Unit, number, Unit': typed.referToSelf(self => function (x, n, unit) {
      const valueless = x.toNumeric(unit);
      return unit.multiply(self(valueless, n));
    }),
    'Unit, BigNumber, Unit': typed.referToSelf(self => (x, n, unit) => self(x, n.toNumber(), unit)),
    'Array | Matrix, number | BigNumber, Unit': typed.referToSelf(self => (x, n, unit) => {
      // deep map collection, skip zeros since floor(0) = 0
      return (0, _collection.deepMap)(x, value => self(value, n, unit), true);
    }),
    'Array | Matrix | Unit, Unit': typed.referToSelf(self => (x, unit) => self(x, 0, unit)),
    'Array | Matrix': typed.referToSelf(self => x => {
      // deep map collection, skip zeros since floor(0) = 0
      return (0, _collection.deepMap)(x, self, true);
    }),
    'Array, number | BigNumber': typed.referToSelf(self => (x, n) => {
      // deep map collection, skip zeros since ceil(0) = 0
      return (0, _collection.deepMap)(x, i => self(i, n), true);
    }),
    'SparseMatrix, number | BigNumber': typed.referToSelf(self => (x, y) => {
      return matAlgo11xS0s(x, y, self, false);
    }),
    'DenseMatrix, number | BigNumber': typed.referToSelf(self => (x, y) => {
      return matAlgo14xDs(x, y, self, false);
    }),
    'number | Complex | Fraction | BigNumber, Array': typed.referToSelf(self => (x, y) => {
      // use matrix implementation
      return matAlgo14xDs(matrix(y), x, self, true).valueOf();
    }),
    'number | Complex | Fraction | BigNumber, Matrix': typed.referToSelf(self => (x, y) => {
      if (equalScalar(x, 0)) return zeros(y.size(), y.storage());
      if (y.storage() === 'dense') {
        return matAlgo14xDs(y, x, self, true);
      }
      return matAlgo12xSfs(y, x, self, true);
    })
  });
});